Aggregated trading system

ABSTRACT

A trading system is described herein for hosting a collection of one or more electronic exchanges. The collection of electronic exchanges may be made up of separately designated exchanges under one or more authorizing and regulating bodies. The trading system receives from traders bids to purchase and offers to sell a tradeable object listed at one of the electronic exchanges. Then, the trading system directs the bids and offers to the appropriate exchange where the bids and offers may be automatically matched in the corresponding market. The trading system may also be used to take actions in one or more markets that are internal and external to the trading system on behalf of a trader using preprogrammed trading instructions.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a continuation of U.S. application Ser. No.12/871,830 filed on Aug. 30, 2010 and issued on Feb. 7, 2012 as U.S.Pat. No. 8,112,351. The Ser. No. 12/871,830 application is acontinuation of U.S. application Ser. No. 12/471,083 filed on May 22,2009 and issued on Sep. 21, 2010 as U.S. Pat. No. 7,801,806. The Ser.No. 12/471,083 application is a continuation of U.S. application Ser.No. 11/415,863 filed on May 2, 2006 and issued on Jun. 30, 2009 as U.S.Pat. No. 7,555,457. The Ser. No. 11/415,863 application is acontinuation of U.S. application Ser. No. 10/702,288 filed on Nov. 6,2003 and issued on May 26, 2009 as U.S. Pat. No. 7,539,640. The contentsof the Ser. Nos. 12/871,830; 12/471,083; 11/415,863; and 10/702,288applications are hereby incorporated by reference in their entirety.

FIELD OF INVENTION

The present invention is related to a computer-based system forfacilitating the trading of tradeable objects, and more particular,relates to a computer-based system for hosting a collection of one ormore electronic exchanges.

BACKGROUND

At one time, there were only open-outcry exchanges where traders, ormore specifically buyers and sellers, would come together to trade inperson. With the advent of electronic trading, traders may participateat their client devices from remote distances by communicating overphysical networks with electronic exchanges that automatically matchbids and offers.

In particular, subscribing traders are connected to an exchange'selectronic trading platform by way of a communication link and throughan application program interface to facilitate real-time electronicmessaging between themselves and the exchange. The electronic tradingplatform includes at least one electronic market, which is at the heartof the trading system for a particular market and handles the matchingof bids and offers placed by the subscribing traders for that market.The electronic messaging includes market information that is sent fromthe electronic market to the traders. Once the traders receive marketinformation, it may be displayed to them on their trading screens. Uponviewing the information, traders can take certain actions including theactions of sending buy or sell orders to the electronic market,adjusting existing orders, deleting orders, or otherwise managingorders. Traders may also use software tools on their client devices toautomate these and additional actions.

To set up an electronic exchange, one must generally get approval from aparticular regulating commission. For example, in the field of futures,approval must come from the governmental authority known as theCommodity Futures Trading Commission (CFTC). An exchange may list one ormore tradeable objects, but approval for each tradeable object must begiven by the CFTC. Examples of registered exchanges with the CFTC in theChicago, Ill. area includes the Chicago Board of Trade (CBOT) andChicago Mercantile Exchange (CME), just to name a few.

In addition, the CFTC provides a list of the approved tradeable objectsfor the CBOT and CME. As used herein, the term “tradeable objects,”refers simply to anything that can be traded with a quantity and/orprice. It includes, but is not limited to, all types of tradeableobjects such as financial products, which can include, for example,stocks, options, bonds, futures, currency, and warrants, as well asfunds, derivatives and collections of the foregoing, and all types ofcommodities, such as grains, energy, and metals. The tradeable objectmay be “real,” such as products that are listed by an exchange fortrading, or “synthetic,” such as a combination of real products that iscreated by the user. A tradeable object could actually be a combinationof other tradeable object, such as a class of tradable objects.

Getting approval for an electronic exchange is one obstacle; howeveractually implementing a successful electronic exchange is another. Forexample, one must purchase or lease space to house the computerequipment. Then, computer equipment must be acquired such as servers,gateways, workstations, and so forth to run the exchange. Once tradersare willing and interested in trading at the exchange, connections mustbe made from the traders to the exchange. This might entail setting upgateways to the traders so that they can receive market data feeds andso that the exchange can receive bids and offers. And when the exchangeis up and running, it needs continuous support to maintain a robusttrading environment. Even if an exchange already has such equipment tooffer additional tradeable objects, the equipment may age or becomeobsolete, requiring expensive replacement by better and fastercomputers.

Also, the exchange's tradeable objects must be publicized to attracttraders. Even with the best computer equipment and support, if tradersare not there to trade then the exchange can die a premature death.Therefore, exchanges often strive to attract traders to increase volumesof their tradeable objects, keeping in mind most exchanges only makemoney when trading occurs. This is particularly difficult for upstartexchanges or newcomers looking to list their tradeable objects, forexample.

Therefore, what is needed is an improved way of trading. In particular,a new way to list tradeable objects so that traders and exchanges mayboth benefit.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the present embodiments may be better understood withreference to the following drawings. The components in the drawings arenot necessarily to scale, emphasis instead being placed uponillustrating example embodiments.

FIG. 1 is a block diagram that illustrates an example embodiment of theaggregated trading system in communication with one or more clientdevices;

FIG. 2 is a schematic of a preferred embodiment of an aggregated tradingsystem utilized to host a collection of electronic exchanges, and morespecifically, to host a collection of matching engines used to matchbids and offers;

FIG. 3 is a schematic of a preferred embodiment of an electronicexchange that is hosted by an aggregated trading system and furthershows a collection of matching engines;

FIG. 4 is a schematic of a preferred embodiment of an aggregated tradingsystem that includes an internal exchange interface utilized tocommunicate between internal electronic exchanges, and morespecifically, to communicate between matching engines that are internalto the aggregated trading system;

FIG. 5 is a schematic of a preferred embodiment of an aggregated tradingsystem that includes an external exchange interface utilized tocommunicate with one or more external electronic exchanges, and morespecifically, to communicate between matching engines that are externalto the aggregated trading system;

FIG. 6 is a schematic of an alternative embodiment of an aggregatedtrading system that includes interfacing client devices through a switchdirectly to matching engines and their tradeable objects; and

FIG. 7 is a schematic of an alternative embodiment of an aggregatedtrading system that includes interfacing client devices directly withmatching engines and their tradeable objects.

DETAILED DESCRIPTION

I. Overview

According to the preferred embodiments, an aggregated trading system isdescribed herein for hosting a collection of one or more independentlyregistered electronic exchanges. In the preferred embodiment, thecollection of electronic exchanges may be made up of separatelydesignated exchanges under one or more authorizing and regulatingbodies. Each electronic exchange preferably lists at least one tradeableobject for trading amongst buyers and sellers, also referred to hereinas traders. Preferably, the aggregated trading system receives fromtraders bids to purchase and offers to sell a tradeable object listed atone of the electronic exchanges. Then, the aggregated trading systemautomatically directs the bids and offers to the appropriate exchangewhere the bids and offers may be automatically matched in thecorresponding market.

According to another aspect of the preferred embodiments, computersoftware that resides at the aggregated trading system may be used totake actions in one or more markets on behalf of a trader usingpreprogrammed trading instructions. In other words, now that more thanone electronic exchange can be hosted by the aggregated trading system,it is also possible to efficiently integrate trading at markets listedat each of the various exchanges. For instance, a trader might want totrade tradeable objects listed at two different electronic exchanges,both of which are hosted by the aggregated trading system. Using thisfeature, the trader can provide trading instructions in advance to theaggregated trading system (or some component preferably residing withinthe trading system) that include actions to be taken when certainconditions occur in the markets. Then, when the stated condition occurs,the aggregated trading system will take action per the programmedtrading instructions. For instance, when something happens in the firstmarket based on the trading instructions, the aggregated trading systemmay take an action in the second market, and vice-versa. Thisintraexchange-trading feature opens up numerous possibilities inproviding a trader-friendly environment while facilitating the tradingof tradeable objects such that traders and electronic exchanges can bothbenefit.

According to yet another aspect of the preferred embodiments, theaggregated trading system may communicate with one or more externalelectronic exchanges, and more specifically, with matching engines thatare external to the preferred system. This feature allows the aggregatedtrading system to act on behalf of a trader using preprogrammed tradinginstructions with other exchanges that are external to the system.Moreover, this feature allows the aggregated trading system to forwardany actions taken from the trader to the external electronic exchange.For instance, a trader might wish to trade a tradeable object that ishosted at the aggregated trading system and a tradeable object that ishosted at an external electronic exchange. Using thisinterexchange-trading feature, the trader may simply connect to only theaggregated trading system, and still, the trader may trade at bothelectronic exchanges, if so desired.

A private corporation, public corporation, partnership, an individual,or some other body, collectively referred to herein as an entity, mayhave a tradeable object to trade. The present embodiments may be used byany entity to facilitate trading of a tradeable object. Examples of suchentities are given below to illustrate the kinds of situations where theaggregated trading system may be of particular use. Of course, theseexamples are not meant to limit those who may use the presentembodiments in any way.

According to one example, an individual (call him “John” for ease ofillustration) might have come up with a new tradeable object and wishesto list the object for trade, but does not know how to do it. John couldsimply lease or rent space at the aggregated trading system to list histradeable object. John could assist in the development of the matchingengine used to match the incoming bids and offers for his tradeableobject, or alternatively, someone associated with the aggregated tradingsystem may develop the algorithms for him. Once John's matching systemis up and running, he has the potential to reach a large amount oftraders already connected to the aggregated trading system to trade histradeable object.

According to another example, an exchange might have additionaltradeable objects that it wishes to add to its offerings. However, theexchange does not want the extra expense in capital to support the newtradeable objects. As a result, the exchange could lease or rent spaceat the aggregated trading system to list the additional tradeableobjects. If so desired, the trading of the tradeable object could evenbe set up to make the trader believe that he or she is trading at theactual exchange and not at the aggregated trading system. Then, withthis sort of transparency to the trader, the trader could simply logonto the exchange and trade the tradeable object, even though thematching engine for the tradeable object is actually hosted at alocation different than the exchange.

According to yet another example, an exchange might want to addredundancy to their exchange's computer system. For instance, theexchange could use the aggregated trading system as a backup to theexchange's own matching engines in case the exchange experiencesdowntime. An exchange could experience downtime during servicing to thematching engines, or if an outside computer virus hits the exchange'snetwork, or a software bug is found in the exchange's computer system.Regardless of how the downtime occurs, once the exchange goes down (orparts of it), the traders may be immediately transported to trade thevery same tradeable objects at the aggregated trading system.

According to another example, a newly registered exchange might want tostart it's business as an electronic exchange. Without the expenseassociated with building an electronic exchange from scratch, the newexchange could simply obtain space at the aggregated trading system tooffer it's new tradeable objects. Once the new exchange becomes asuccess, and if it is desired, it can eventually build up its resourcesto construct its own electronic exchange.

According to another example, a corporation may wish to acquire capitalby issuing shares to investors. Transfer of ownership in the corporationmay be accomplished by buying and selling shares of the stock, forexample. The corporation may use a matching engine at the aggregatedtrading system to facilitate the trading of its stock. The corporationmay also wish to hedge risk through the use of the aggregated tradingsystem.

The above examples are provided to illustrate some situations where theaggregated trading system may be of particular use. One advantage, amongmany, of the aggregated trading system is that each of the entitiesillustrated above may list their tradeable objects at the sameaggregated trading system which preferably has distribution to a largenumber of traders. Then, each entity has instant access to the largenumber of traders. Other systems, methods, features, and advantages ofthe preferred embodiments will be or become apparent to one with skillin the art upon examination of the following drawings and description.It is intended that all such additional systems, methods, features, andadvantages included within the description be within the scope of thepresent invention, and be protected by the accompanying claims.

II. Aggregated Trading System

FIG. 1 shows a schematic of an example embodiment of the aggregatedtrading system of the preferred embodiments generally indicated as 100.Trading system 100 may be may be operated in software, hardware, or acombination thereof. In the preferred embodiments, trading system 100 isimplemented in software that is stored in memory and is executed by asuitable instruction execution system. If implemented in hardware, as inan alternative embodiment, the trading system 100 may be implementedwith any technology. For sake of illustration, the aggregated tradingsystem 100 may operate on a server or a cluster of servers that worktogether to perform the functions described herein.

Trading system 100 may include an exchange interface 102, an exchangeswitch 104, and one or more electronic exchanges generally indicated as106. Trading system 100 preferably communicates with client devicesgenerally indicated as 108 via exchange interface 102. In particular,exchange interface 102 may receive bids to purchase and offers to sell atradeable object listed at a particular electronic exchange. Theexchange interface 102 is electronically coupled to the exchange switch104 that in turn directs the bids or offers to the appropriateelectronic exchange 106.

Client devices 108 preferably communicate with trading system 100 overone or more communication links generally indicated as 112.Communication links 112 may include direct communications lines, networkconnections, or a combination of the two. Examples of a directcommunications line include digital communications lines provided by acommon carrier such as a T-carrier (for example, T1, T2, T3, and so on),Digital Subscriber Line technology (DSL and its variations), cable modemtechnology, or direct satellite technology, to name a few. Directcommunications lines may link the client devices 108 to trading system100, or the communications lines may link the client devices 108 topoints of access including gateways and routers (not shown for sake ofclarity) that are then coupled to trading system 100. Networkconnections might include a local area network (LAN) and/or a wide areanetwork (WAN). An example of a WAN is the Internet, which is a worldwidecollection of networks and gateways that use the TCP/IP suite ofprotocols to communicate with one another. Regardless of the technologyused in linking client devices 108 to trading system 100, it should benoted that client devices 108 may be local to trading system 100 such asphysically located in the same room or building, or alternatively,client devices 108 may be remote to trading system 100 such that theyare located in different buildings, different cities, or in differentparts of the world.

Client devices 108 may be computing devices that provide an interfacefor traders to trade at one or more markets listed with one, some, orall of electronic exchanges 112 (and external electronic exchanges shownin FIG. 5). Some examples of client devices include a personal computer,laptop computer, hand-held computer, and so forth. Client devices 108,according to the preferred embodiments, include at least a processor andmemory. The processor and memory, which are both well-known computercomponents, are not shown in the Figure for sake of clarity. Preferably,the processor has enough processing power to handle and process thevarious types of market information. For sake of illustration, clientdevices 108 may run any type of operating system, and examples ofoperating systems include Microsoft Windows and its variations (e.g.,Windows 2000, Windows NT, Windows XP, and so forth), Linux, andUnix-type operating systems.

The trading system 100 may also communicate with other systems tofacilitate the trading of tradeable objects. For example, according tosome types of trading, a clearing organization is required to settletrades and regulate delivery. According to this example, each electronicexchange may be connected to external clearing organization usingtechniques known in the art. Alternatively, one or more separateclearing components may be added to the trading system 100 to performthe function of a clearing organization(s) or to communicate with anexternal clearing organization (not shown in the drawing). In anotherexample, which is described later in this application, system 100 maycommunicate with other electronic exchanges, and more specifically,matching engines that are located external to trading system 100.

FIG. 2 is a schematic representation of the hardware and/or softwarecomponents that includes an embodiment of the aggregate trading system100 shown in FIG. 1. In particular, bids and offers are received fromclient devices 108 at the exchange interface 102. Preferably, theexchange interface 102 is the point at which a connection is madebetween the client devices 108 and system 100 so that they can work witheach other and exchange information. Preferably, the TCP/IP networkcommunication protocol is used to exchange information between theclient devices 108 and the exchange interface 102, although thepreferred embodiment is not limited to the type of communicationprotocol used.

The aggregated trading system 100 further includes an exchange switch104 that automatically directs the bids and offers to the appropriateelectronic exchange 106. Exchange switch 104 may be electronicallycoupled to exchange interface 102 over data bus 108. Preferably, databus 108 is an internal bus that is configured in parallel for speed, oralternatively, a data bus configured in series may be used. Preferably,bids and offers are contained in a message format which includes adestination address or an equivalent that may be used by the exchangeswitch 104 to determine its heading. Then, upon receiving a bid messageor an offer message, for instance, the exchange switch 104 may parse themessage to determine which exchange to route the bid or offer message.

Alternatively, exchange interface 102, exchange switch 104, andelectronic exchanges 106 may be coupled by software means in addition toor in place of data bus 108 and/or data bus 110, which is described morebelow. According to this alternative embodiment, messages or parameterswithin the messages may be passed between the interface 102, switch 104,and exchanges 106 by other known mechanisms such as passed by reference,passed by address, or pass by value.

The aggregate trading system 100 further includes one or more electronicexchanges generally designated as 106 in FIG. 2. In the preferredembodiments, each electronic exchange is an independently operatedexchange. For instance, each exchange would be registered as an exchange(or, at least in the preferred embodiments, each non-registered exchangewould have a registered tradeable object to trade) by an authorizingbody. To illustrate, in the field of commodities, the Chicago Board ofTrade (CBOT) has been designated by the CFTC as a contract market underthe Commodity Exchange Act. Other entities, for that matter, may bedesignated contract markets upon approval by the CFTC. The same might betrue for other types of tradeable objects, except an entity might getapproval under a different authorizing body or no authorizing body atall, if authorization is not necessary. For example, an electronicexchange might also include a marketplace that does not require approvalfrom a governing body. For instance, trading airline tickets, hotels,car rentals, sports, and so forth, may not require a governing body.

It should be noted that additional electronic exchanges (matchingengines) may be added to the trading system 100 as desired. Addingadditional electronic exchanges may be accomplished by installing theappropriate software applications into memory or hard storage forexecution. Such application programs may include a disk-basedinstallation, or setup, program that does most of the work of preparingthe program to work with the aggregated trading system, for example. Thesoftware program can check for devices attached to the system 100,request the user to choose from sets of options, create a place for theprogram on the hard disk, and/or modify system startup files asnecessary. To remove electronic exchanges, each software application maybe uninstalled. Applications may have built-in uninstall utilities, andin other cases a separate uninstall program can be used.

As shown in FIG. 2, an “N” number of electronic exchanges are coupled toexchange switch 104 to receive bids and offers. Exchange switch 104 maybe electronically coupled to electronic exchanges 106 by a second databus 110. Included with second data bus 110 may be a bus enumerator 112that operates as a device driver to locate electronic exchanges 106 onthe 110 and assign a unique identification code to each electronicexchange 106. Other ways of communicating between the exchange switch104 and electronic exchanges 106 may be used such as implementingvarious software call routines like those mentioned above, for example.

Referring to FIG. 2, here is an example process of receiving bids andoffers and directing them to an electronic exchange. Assume, for thisexample, that an offer message to sell “25” at “100” for “tradeableobject M” at “electronic exchange 1” is received at exchange interface102. Then, exchange interface 102 would preferably forward the offermessage to exchange switch 104 where it parses the offer message anddirects the offer message to “electronic exchange 1.” Assume also thattrading system 100 receives a second offer message to sell “30” at “50”for “tradeable object Y” at “electronic exchange 2.” Now, exchangeinterface 102 would forward the second offer message to exchange switch104 where it parses the message and directs the offer message to“electronic exchange 2.” Trading system 100 may continually receivevarious bids and offers and direct them to the appropriate electronicexchange as they are received.

Preferably, trading system 100 further includes data line 114 that isused to carry order book information from the electronic exchanges 106to exchange interface 102. In particular, data line 114 preferablycouples each of electronic exchanges 106 with exchange interface 102 tocarry order book information from the electronic exchanges 106 toexchange interface 102. Additionally, data line 114 may carry otheruseful information such as the last traded price, the last tradedquantity, the settlement price, open prices, close prices, and so forth.Data line 114 may represent one or more internal busses to accommodate adesirable output bandwidth from the electronic exchanges 106 to exchangeinterface 102. Furthermore, traders may access order book informationfor each electronic exchange 106 at exchange interface 102 through thesame communication link that they use to send bids and offers. It shouldbe noted that the present embodiments are not limited to sending orderbook information through exchange interface 102, but rather a separatesoftware component may be used to output such information to clientdevices 108.

According to the preferred embodiments, order book information mayinclude the inside market, which is generally the current lowest sellprice (sometimes referred to as the best ask) and the current highestbuy price (sometimes referred to as the best bid). Order bookinformation may also include market depth, which generally refers toquantities available in the market at the certain buy price levels andsell price levels. Of course, the number of price levels or market depthprovided to a trader may depend on the electronic exchange. In addition,order book information might also include the open price, settlementprice, net change, volume, last traded price, the last traded quantity,and order fill information. The present embodiments are not limited tothe type of order book information provided.

III. Electronic Exchange Hosted by an Aggregated Trading System

FIG. 3 is a schematic representation of the hardware and/or softwarecomponents which includes an embodiment of the “electronic exchange 1”shown in FIGS. 1 and 2. In particular, bids and offers are received fromthe exchange switch 104 (shown in FIG. 2) at the market interface 300.Preferably, the market interface 300 is the point at which a connectionis made between the exchange switch 104 (shown in FIG. 2) and anelectronic exchange.

The electronic exchange 106 further includes a market switch 302 thatautomatically directs the bids and offers to the appropriate market fora tradeable object 304, 306, 308 having matching engines 310, 312, 314,respectively. Market switch 302 may be electronically coupled to marketinterface 300 over data bus 316. Preferably, data bus 316 is an internalbus that is configured in parallel for speed, or alternatively, a databus configured in series may be used. Preferably, bids and offers arecontained in a message format which includes a destination address or anequivalent that may be used by the market switch 302 to determine itsheading. Then, upon receiving a bid message or an offer message, forinstance, the market switch 302 may parse the message to determine whichtradeable object to route the bid or offer message.

Alternatively, market interface 300, market switch 302, and tradeableobjects 304, 306, and 308 may be coupled by software means in additionto or in place of data bus 316 and/or 318. According to this alternativeembodiment, messages or parameters within the messages may be passedbetween the interface 300, switch 302, and tradeable objects 304, 306,and 308 by other mechanisms such as passed by reference, passed byaddress, or pass by value.

According to the preferred embodiments, the “electronic exchange 1” mayinclude one or more tradeable objects that may be installed oruninstalled. Market switch 302 may be electronically coupled totradeable objects 304, 306, and 308 by a second data bus 318. Includedwith second data bus 318 may be a bus enumerator 320 which operates as adevice driver to locate tradeable objects 304, 306, and 308 and assignsa unique identification code to each tradeable object. Other ways ofcommunicating between the market switch 302 and tradeable objects 304,306, and 308 may be used.

In the preferred embodiments, each tradable object is an authorizedobject for trading. For instance, each tradeable object may beregistered by an authorizing body (e.g., the same authorizing body thatexchanges are registered under). As shown in FIG. 3, there are an “M”number of tradeable objects to trade, namely, “tradeable object 1 ,”“tradeable object 2,” through “tradeable object M.” Preferably, bids andoffers are contained in a message format which include a destinationaddress or an equivalent that may be used by the market switch 302.Then, upon receiving a bid message or an offer message, for instance,the market switch 302 may determine which matching engine 310, 312, 314to route the bid or offer message.

Each tradeable objects 304, 306, and 308 may have a unique matchingengine 310, 312, 314 associated with it. The matching engine preferablyperforms the function of automatically matching the incoming bids andoffers to resting orders in the order book. Each matching engine may beuniquely designed for the particular tradeable object. In addition, eachmatching engine may run independently from the other matching engines.In other words, matching engine 310 may run independently of matchingengine 312 and not be aware of the matches made by matching engine 312.Alternatively, the matching engines may be integrated with one anotherto allow for integrated matching algorithms (e.g., spread tradingmultiple tradeable objects). For example, matching engine 310 may bemade aware of the orders processed by matching engine 312. Then, the twomatching engines 310, 312 may perform functions that are interrelatedwith each other.

As shown in FIG. 3 and using the example set forth with respect to FIG.2, the offer to sell “25” at “100” for “tradeable object M” at“electronic exchange 1” might be received at the market interface 300.Then, the market interface 300 would forward the offer to the marketswitch 302 where it automatically directs the offer to matching engine314 for “tradeable object M.”

IV. Trading with Internal Markets

FIG. 4 shows a schematic of an embodiment of the aggregated tradingsystem of the preferred embodiments generally indicated as 400 with theaddition of an internal exchange interface 414 for interconnectingelectronic exchanges 412. This embodiment supports intraexchange tradingby opening up communication between electronic exchanges 412 that areinternal to the aggregated trading system 400.

In particular, the internal exchange interface 414 may be used tointerface with one or more internal electronic exchanges indicated as412. This feature is useful to perform actions at other markets with theelectronic exchanges on behalf of the traders, and may be used forplacing an order in a market, changing an existing order, or deleting anexisting order by a electronic market at an exchange on behalf of atrader.

For example, programmed instructions may be stored at the internalexchange interface 414 and can be executed to take actions in one of thevarious exchanges 412. That way, various trading strategies may beimplemented such as cross-exchange or cross-market spreads. Instructionsmay be received from traders, or alternatively, they may be downloadedfrom a user administrator of the preferred system, for example. U.S.patent application Ser. No. 10/628,631, entitled “System and Method forImproved Electronic Trading,” filed on Jul. 28, 2002, the contents ofwhich are herein incorporated by reference, describes a system andmethod for an exchange to act based on a market event on behalf of atrader. The system and method in the incorporated application may beused by the trading system 400 to facilitate intraexchange trading.

V. Trading with External Electronic Exchanges

FIG. 5 shows a schematic of an embodiment of the aggregated tradingsystem of the preferred embodiments generally indicated as 400 incommunication with one or more external electronic exchanges 502, 504,506. System 400 preferably includes an exchange interface 408, exchangeswitch 410, one or more electronic exchanges indicated as 412, andexternal exchange interface 500. The exchange interface 408, exchangeswitch 410, and the one or more electronic exchanges 412 are describedabove.

According to the preferred embodiments, the external exchange interface500 may be used to interface with one or more external electronicexchanges 502, 504, 506. An external electronic exchange is an exchangethat operates outside of the trading system 400. This feature is usefulto perform actions at outside exchanges on behalf of the traders, andmay be used for placing an order in a market, changing an existingorder, or deleting an existing order by an electronic market at anexchange on behalf of a trader. As mentioned above, U.S. patentapplication Ser. No. 10/628,631, entitled “System and Method forImproved Electronic Trading,” describes a system and method for anexchange to act based on a market event on behalf of a trader. Thesystem and method in the incorporated application may be used by thetrading system 400 to facilitate interexchange trading.

It should be noted that the internal exchange interface 414 in FIG. 4and the external exchange interface 500 may be used in the sameaggregated trading system to provide both functions to the traders. Noteagain that each matching engine may use either interface 414 or 500, orboth interfaces 414 and 500, or neither interface 414 or 500, dependingon the desired matching functionality.

VI. Alternative Implementations of the Aggregated Trading System

FIG. 6 shows a schematic of an alternative embodiment of an aggregatedtrading system that includes interfacing client devices through a switchdirectly to matching engines and their tradeable objects. Generallyspeaking, the alternative embodiment indicated as 600 in FIG. 6 is aschematic representation that includes some of the software componentsdescribed with respect to the aggregate trading system 100 shown in FIG.2. Bids and offers are received from client devices 108 at the exchangeinterface 602. Similarly to what was described above with respect toFIG. 2, the exchange interface 602 is the point at which a connection ispreferably made between the client devices 108 and system 600 so thatthey can work with each other and exchange information. Information thatmight be exchanged between each other includes bids and offers and orderbook information. Of course, other types of information know to those ofordinary skill in the art may also be provided in the data streams.

The aggregate trading system 600 further includes an exchange switch 604that automatically directs the bids and offers to the appropriatematching engines generally indicated as 606. Exchange switch 604 may beelectronically coupled (via software calls or a data bus, for instance)to exchange interface 602. Then, upon receiving a bid message or anoffer message, in one instance, the exchange switch 604 may parse themessage to determine which matching engine 606 to route the bid or offermessage. An entity may own one or more of the matching engines 606.

FIG. 7 is a schematic of an alternative embodiment of an aggregatedtrading system that includes interfacing client devices directly withmatching engines and their tradeable objects. This alternativeembodiment is indicated as 700. In this embodiment, traders can directlyinterface with the matching engines generally indicated as 702 withoutgoing through one or more switches. In particular, traders can connectto one or more interfaces generally indicated as 704 to access matchingengines 702. Any kind of communication link (such as those describedabove) may be used to connect client devices to the interfaces 704 ofsystem 700.

VIII. Conclusion

An electronic trading system is described herein for hosting acollection of one or more electronic exchanges, in which, an entity maylease or purchase, for example, virtual space in the aggregated tradingsystem. So, for example, if an entity has a registered tradeable object,then using the preferred system, he or she may list the object to tradeat the aggregated trading system. As a result, traders who are alreadyconnected to the aggregated trading system, may also trade this entity'stradeable object.

Of course, there are many advantages and features of the aggregatetrading system. Some example advantages and features are describedherein, and other advantages of the system will become apparent to thoseof ordinary skill in the art upon examination of the drawings anddescription contained herein. It is intended that all such additionalsystems, methods, features, and advantages be included within thedescription.

One advantage is that an entity with registered tradeable objects canhost one or more markets on a trading system that generally has a largertrader draw than if the individual attempted to become a stand-aloneexchange. For instance, the aggregated trading system may have a largenumber of traders already connected through a sophisticated structure ofnetworks. Through these networks, traders may have access to all of thevarious exchanges that are hosted by the present system including smallexchanges.

Another advantage is that because an existing structure is in place,extra expense normally associated with setting up and implementing anexchange to attract the necessary volume may already be set in place bythe aggregated trading system. With that said, software and/or hardwareused to run the matching engine for the newly registered tradeableobject may be simply installed at the aggregated trading system. Thatway, for example, a newly registered tradeable object may be put intothe market faster using the present system than by starting a newexchange or building upon an old exchange.

Yet, another advantage is that because a collection of markets isassembled together, the trader has a choice among a variety of tradeableobjects to trade. Preferably, without unnecessary complications, atrader may quickly trade one, some, or all of the tradeable objectslisted at the aggregated trading system.

Preferred embodiments of the present invention have been describedherein. It is to be understood, of course, that changes andmodifications may be made in the embodiments without departing from thetrue scope of the present invention, as defined by the appended claims.The present embodiment preferably includes logic to implement thedescribed methods in software modules as a set of computer executablesoftware instructions. A processor may execute the software modules andmay be programmed by those of skill in the art to provide the describedfunctionality.

The software may be represented as a sequence of binary bits maintainedon a computer readable medium. The computer readable medium may includemagnetic disks, optical disks, and any other volatile or (e.g., RandomAccess memory (“RAM”)) non-volatile firmware (e.g., Read Only Memory(“ROM”)) storage system readable by the processor. The memory locationswhere data bits are maintained also include physical locations that haveparticular electrical, magnetic, optical, or organic propertiescorresponding to the stored data bits. The software instructions may beexecuted as data bits by the processor with a memory system causing atransformation of the electrical signal representation, and themaintenance of data bits at memory locations in the memory system tothereby reconfigure or otherwise alter the unit's operation. Theexecutable software code may implement, for example, the methods asdescribed above.

It should be understood that the programs, processes, methods andapparatus described herein are not related or limited to any particulartype of computer or network apparatus (hardware or software), unlessindicated otherwise. Various types of general purpose or specializedcomputer apparatus or computing device may be used with or performoperations in accordance with the teachings described herein.

It should further be understood that a hardware embodiment might take avariety of different forms. The hardware may be implemented as anintegrated circuit with custom gate arrays or an application specificintegrated circuit (“ASIC”). The embodiment may also be implemented withdiscrete hardware components and circuitry. In particular, it isunderstood that the logic structures and method steps may be implementedin dedicated hardware such as an ASIC, or as program instructionscarried out by a microprocessor or other computing device. It shouldalso be understood that each electronic exchange or matching engine maybe implemented in hardware and may be rack-mounted, so thatadding/removing a matching engine can be simply accomplished by slidinga component into or out of the rack, for example.

The claims should not be read as limited to the described order ofelements unless stated to that effect. In addition, use of the term“means” in any claim is intended to invoke 35 U.S.C. §112, paragraph 6,and any claim without the word “means” is not so intended. Therefore,all embodiments that come within the scope and spirit of the followingclaims and equivalents thereto are claimed as the invention.

1. A system including: a computing device, wherein the computing deviceis configured to host a collection of independent electronic exchangescomprising a first independent electronic exchange and a secondindependent electronic exchange, wherein each independent electronicexchange lists at least one tradeable object for trading among buyersand sellers, and wherein each independent electronic exchange in thecollection includes a matching engine that automatically matches bids topurchase and offers to sell the at least one tradeable object listed ata particular independent electronic exchange in the collection, andwherein the computing device is configured to send a trade order requeston behalf of a trader from the first independent electronic exchange tothe second independent electronic exchange within the hosted collectionof independent electronic exchanges.
 2. The system of claim 1, whereinthe first electronic exchange further receives a condition to triggerexecution of the trade order request.
 3. The system of claim 1, whereinthe computing device is further configured to detect the condition totrigger execution of the trade order request.
 4. The system of claim 2,wherein the condition comprises a fill of a trade order.
 5. The systemof claim 2, wherein the condition comprises a market related eventrelated to a tradeable object.
 6. The system of claim 1, wherein thetrade order request comprises a trade order to buy or sell a tradeableobject at the second electronic exchange.
 7. The system of claim 6,wherein the trade order is associated with a trading strategy.
 8. Thesystem of claim 7, wherein the trading strategy comprises a spreadtrading strategy.
 9. The system of claim 1, wherein the trade orderrequest comprises a request to modify an order parameter associated witha trade order pending at the second electronic exchange.
 10. The systemof claim 1, wherein the trade order request comprises a request todelete a trade order pending at the second electronic exchange.
 11. Thesystem of claim 1, wherein the trade order request is executed on behalfof the trader at the second electronic exchange.